AT32229B - Process for the preparation of halogenated vat dyes. - Google Patents

Process for the preparation of halogenated vat dyes.

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Publication number
AT32229B
AT32229B AT32229DA AT32229B AT 32229 B AT32229 B AT 32229B AT 32229D A AT32229D A AT 32229DA AT 32229 B AT32229 B AT 32229B
Authority
AT
Austria
Prior art keywords
preparation
vat dyes
halogenated
halogen
halogenated vat
Prior art date
Application number
Other languages
German (de)
Original Assignee
Chem Ind Basel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Chem Ind Basel filed Critical Chem Ind Basel
Application granted granted Critical
Publication of AT32229B publication Critical patent/AT32229B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von   halogenhaltigen Küpenfarbstoffen.   



   Es ist bekannt, dass das in der Literatur unter dem Namen Indirubin beschriebene Kondensationsprodukt von Indoxyl mit Isatin von der Konstitution 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 Lösung ein ; aus der Lösung geht die gebildete   Farbstoffsulfosäure   mit lebhafter   Lilanuanco   auf Wolle auf. In Alkohol und Benzol ist der neue Farbstoff auch in der Hitze 80 gut wie unlöslich. Anilin löst ihn in der Kälte kaum, in der Wärme ziemlich leicht mit rotvioletter Farbe ; Nitrobenzol löst ihn in der   Hätte   nur sehr schwer, in der Hitze jedoch leicht mit   prachtvoll   violettroter Farbe.

   Beim Behandeln mit alkalischen Reduktionsmitteln wird eine hellgelbe   Küpe   erhalten, aus welcher Baumwolle in lebhaften violetten Tönen angefärbt wird, welche bei kurzem Seifen der Färbungen bei   900   in eine sehr lebhafte, durch vorzügliche Echtheitseigenschaften ausgezeichnete Heliotropnuancen   übergehen.  



   <Desc / Clms Page number 1>
 



  Process for the preparation of halogenated vat dyes.



   It is known that the condensation product of indoxyl with isatin, described in the literature under the name of indirubin, has the constitution
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 Solution one; The dye sulfonic acid formed goes out of the solution with lively Lilanuanco on wool. The new dye is practically insoluble in alcohol and benzene, even at high temperatures. Aniline hardly dissolves it in the cold, but rather easily in the warm with a red-violet color; Nitrobenzene dissolves it only with great difficulty in the had, but easily in the heat with a magnificent purple-red color.

   When treating with alkaline reducing agents, a light yellow vat is obtained, from which cotton is dyed in lively violet tones, which, when the dyeings are briefly soaped, change into a very lively heliotrope nuance with excellent fastness properties.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von halogenhaltigen Küpenfarbstoffen, dadurch gekennzeichnet, dass man das unter dem Namen Indirubin bekannte Kondensationsprodukt aus Indoxyl und Isatin mit Halogen bzw. hnlogenabgebcnden Mitteln behandelt. PATENT CLAIM: Process for the preparation of halogen-containing vat dyes, characterized in that the condensation product of indoxyl and isatin known under the name of indirubin is treated with halogen or halogen-emitting agents.
AT32229D 1907-03-13 1907-03-13 Process for the preparation of halogenated vat dyes. AT32229B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT32229T 1907-03-13

Publications (1)

Publication Number Publication Date
AT32229B true AT32229B (en) 1908-03-10

Family

ID=3547261

Family Applications (1)

Application Number Title Priority Date Filing Date
AT32229D AT32229B (en) 1907-03-13 1907-03-13 Process for the preparation of halogenated vat dyes.

Country Status (1)

Country Link
AT (1) AT32229B (en)

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